fz_stream *
fz_open_file_progressive(fz_context *ctx, const char *name, int bps)
{
FILE *f;
#if defined(_WIN32) || defined(_WIN64)
f = fz_fopen_utf8(name, "rb");
#else
f = fopen(name, "rb");
#endif
if (f == NULL)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot open %s", name);
return fz_open_file_ptr_progressive(ctx, f, bps);
}
/*
Open the named file and wrap it in a stream.
filename: Path to a file. On non-Windows machines the filename should
be exactly as it would be passed to fopen(2). On Windows machines, the
path should be UTF-8 encoded so that non-ASCII characters can be
represented. Other platforms do the encoding as standard anyway (and
in most cases, particularly for MacOS and Linux, the encoding they
use is UTF-8 anyway).
*/
fz_stream *
fz_open_file(fz_context *ctx, const char *name)
{
FILE *file;
#ifdef _WIN32
file = fz_fopen_utf8(name, "rb");
#else
file = fopen(name, "rb");
#endif
if (file == NULL)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot open %s: %s", name, strerror(errno));
return fz_open_file_ptr(ctx, file);
}
/*
Return true if the named file exists and is readable.
*/
int
fz_file_exists(fz_context *ctx, const char *path)
{
FILE *file;
#ifdef _WIN32
file = fz_fopen_utf8(path, "rb");
#else
file = fopen(path, "rb");
#endif
if (file)
fclose(file);
return !!file;
}
/*
Open an output stream that writes to a
given path.
filename: The filename to write to (specified in UTF-8).
append: non-zero if we should append to the file, rather than
overwriting it.
*/
fz_output *
fz_new_output_with_path(fz_context *ctx, const char *filename, int append)
{
FILE *file;
fz_output *out;
if (!strcmp(filename, "/dev/null") || !fz_strcasecmp(filename, "nul:"))
return fz_new_output(ctx, 0, NULL, null_write, NULL, NULL);
#ifdef _WIN32
/* Ensure we create a brand new file. We don't want to clobber our old file. */
if (!append)
{
if (fz_remove_utf8(filename) < 0)
if (errno != ENOENT)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot remove file '%s': %s", filename, strerror(errno));
}
file = fz_fopen_utf8(filename, append ? "rb+" : "wb+");
#else
/* Ensure we create a brand new file. We don't want to clobber our old file. */
if (!append)
{
if (remove(filename) < 0)
if (errno != ENOENT)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot remove file '%s': %s", filename, strerror(errno));
}
file = fopen(filename, append ? "rb+" : "wb+");
#endif
if (!file)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot open file '%s': %s", filename, strerror(errno));
setvbuf(file, NULL, _IONBF, 0); /* we do our own buffering */
out = fz_new_output(ctx, 8192, file, file_write, NULL, file_drop);
out->seek = file_seek;
out->tell = file_tell;
out->as_stream = file_as_stream;
return out;
}
